Improvements in or relating to electric signalling systems,申请号GB19300024118-传众专利搜索

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发明名称	Improvements in or relating to electric signalling systems
摘要
申请公布号	GB360499(A)	申请公布日期	1931.11.12
申请号	GB19300024118	申请日期	1930.08.12
申请人	LANDIS & GYR, S.A.	发明人
分类号	G01R17/08	主分类号	G01R17/08
代理机构		代理人
主权项
地址

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